W3L3 - DNS Flashcards
1
Q
What does DNS stand for?
A
Domain Name System
2
Q
What level is DNS implemented at?
A
Application Level
3
Q
Top Level Domain Servers
A
generic - .com, .net
country-code - .nz, .au
4
Q
Second Level Domain Servers
A
.ac, .co
5
Q
Root Servers
A
A list of DNS servers known to exist ast the top of the tree
A through M .root-servers.net
6
Q
generic - .com, .net
country-code - .nz, .au
A
Top Level Domain Servers
7
Q
.ac, .co
A
Second Level Domain Servers
8
Q
A list of DNS servers known to exist ast the top of the tree
A through M .root-servers.net
A
Root Servers
9
Q
DNS TTL
A
the amount of time a recursive server can cache a specific result for
10
Q
The root servers are distributed…
A
very widely to ensure service security and performance
